From mboxrd@z Thu Jan  1 00:00:00 1970
From: jmk@plan9.bell-labs.com
To: 9fans@cse.psu.edu
Subject: Re: [9fans] 9p2k, fsync
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Date: Wed,  7 Feb 2001 14:14:44 -0500
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On Wed Feb  7 13:43:21 EST 2001, schwartz@bio.cse.psu.edu wrote:
> | Fsync etc. is at the wrong level.  The issue is not a system-wide
> | question, but a file-server question.
>
> So how does an application with an open fd assure that the write()s it
> has issued are really on disk?  It's impossible for that program to tell
> which file server you're using.  In fact, you might be using several,
> if they're stacked up.
>

I think you have to believe that when the fileserver replies to your
write that the data is written, just like you do when you say 'fsync';
whether the data is actually on some 'stable storage' is, in both
cases, not known.